Jump to content

Replacement of Body Control Modules


MAD JAX

Recommended Posts

Posted

The local GM "Dealership" fried My daughters BCM for "Flashing" it when they shouldn't have (for the PassLock II "Security" lamp flashing) so I'll be dammed if we're buying one from THEM, but it's lookin' like I'll have to buy one from SOME GM "Dealer", and quite frankly I don't want to do that either... : ?

 

I'm lookin' to "Get that great GM feeling...", I'm not finding much in the way of other sources having ANY availability, and I'd rather NOT try installing one snaked from the Bone-Yard ~ only to find IT defective of operation, much-less upon attempting to "Flash" it for vehicle specifics @ $95 bucks/Dealer and $125/"Mobile" independant... : ?

 

If anyone HERE has a source to share for replacement "NEW" or "Remanufactured" GM Body Control Modules (aka. BCM or Vehicle Control Module ~ VCM) My application is 2001 GMC Jimmy 4.3 2dr. 2wd., and it would be greatly appreciated, thank You.

Posted

i'll ask ,,,why are you paying for a module they forked up ? it doesnt make sense my friend

+1

Posted

Call GM Customer Service. The dealership fried it they have to replace it

  • 2 weeks later...
Posted

Because I refused to pay an additional $190.00 "Un-Warranted" Diagnosis-Time and insulted them for saying "...You can't tell me what You did to disable it over the two-hours I've been waiting here today, so I don't feel You're competent to do-so at MY "Un-Warranted" expense! If you won't diagnose if FREE I'll at-least split the fee, but You HAVE to warranty that what You tell me to buy WILL in-fact fix the vehicle after I install It", and they told me to remove my vehicle from their property immediatly or they'd have it towed to an impound-yard.

 

I've since sought to document my diagnosis and repair of it so I can sue them in Small Claims Court.

 

Click here for the original story-thread:

 

http://www.gmtruckclub.com/forum/showthread.php/130010-Dealer-quot-Flashed-quot-BCM-4-SRS-MIL-amp-quot-Dome-stays-On-quot-now-JIMMY-WON-T-RUN

 

I've got it running now as follows below:

 

Being the only alternative to taking it BACK to any "GM DEALERSHIP" for their subscription to "OEM" Factory-Specific Programming (vs. what the "Hot-Rod Tuners" think they can...and then find-out they CAN'T do ; ) I had a "Mobile Diagnostic Services" firm come-out 'n diagnose the vehicle, and -- after having determined several functions failing dispite valid serial communications data on "The BUS" they determined:

"BAD BCM ~ REPLACE AND REPROGRAM PRIOR FUTHER DIAGNOSIS"

So I did that ~ and learned something ELSE that the original "Dealer" servicing the vehicle 6 months ago SHOULD HAVE KNOWN BEFORE TRYING TO "FLASH" THE VEHICLE...that the WRONG BCM P/N had been installed in the Vehicle all-along!

I had told them (GM Dealership) it was reportedly CHANGED by the previous owners "Tech" that never fixed the car...that they should VERIFY the correct P/N was installed IF they wound-up interfacing the DLC...that's something I HAD THEN ASKED THE TECH ~ which He confirmed "OK" ~ at that time when they'd brought me to see It ~ NOW as "DEAD-WEIGHT" in His Service Bay that first day, so WTF!!!

So I bought one (from another GM Dealer) to install and -- per-instructions FROM BOTH "Dealer" and "Mobile Diagnostic Services" -- had the latter return to "Reprogram BCM"... : ?

But because THIS particular BCM comes "Pre-Flashed" -- something no-one told ME! -- basically what-they-did for that $100 bucks was "Verify Communications" (something they'd already done) then initiate the "10-minute Key Relearn" proceedure (I could've done the "30-minute re-learn proceedure") and then crank-it-over...

And it started-up...and then RAN ~ for the first-time in over 6 months!!!

All of My Keyless Remote "Lock/Un-Lock" functions are WORKING AGAIN, including "Panic", etc., and too, the "Dome Override" control of the Headlamp System "Daytime Running Lights" (DRL) as-well!

My "Air Bag" lamp is OFF w/NO DTC's present in that system (had a U-1000 DTC) and we found the "Dome Light Stays On" problem remains ~ as-related to a bad Door Handle Switch, which when actuated tells the BCM someone wants INTO the vehicle and so ILLUMINATE the interior lamps for an entry OR activate the Alarm System/Vehicle Theft Deterrent...and I've never been-so-glad to hear the Horn-Honk'n Lights-Flashin' ~ Hoo-Rah!!!

My wife drove the car to work this morning "just to see...", and We'll give it to my daughter this weekend ~ 6 months AFTER She started College... : ?

Posted

By the way "GM CUSTOMER SERVICE" was contacted ~ and wouldn't do SQUAT... : ?

Archived

This topic is now archived and is closed to further replies.

  • Latest Articles

  • Posts

    • Did the KYBs keep it the same height in the front? I was concerned that pre-assembled assembly would raise it up an inch to standard non-z60 height.. I guess which it would make the rake 1 inch instead of 2 inches.
    • Thank you for keeping the train on the tracks and for a thoughtful engagement. I enjoyed the reflection on a previous stance to refine and improve your position. I like that inquisitive flexibility about you Atlas.    No the process isn't sterile. Hundreds, perhaps thousands of miles of piping, vessels, pumps. Chevron, the people I worked for, were keenly aware that there is a market for what is known as their "ISOCLEAN" line of lubricants. These are lubricants that are the same as those sold bulk that are further processed by filtration to a level your particular application demands. They will filter and package and provide lab documentation as required. Do not kid yourself. Every gallon of oil that goes into a Chevron Turbine, reciprocating compressor, generator is prefiltered and tested before being charged. Lest wise it was when I was there in the plants I worked in.    There are requirements set by manufactures for the cleanliness of the oils used in their equipment. OTR such as CUMMINS has standards shared with customers on this. Commercial interest selling to Ma and Pa do, but don't share that information. Not even upon request but internally, they do exist.    The GM study sited, (Graph from Machinery Lubrication in previous post) only shows "relative" importance.  I find that fascinating. By constructing the graph like this they admit there are dozens of factors in engine life and via scientific method determined the effect of 'relative cleanliness' on engine life not in miles but in 'FACTORS'. This allows a certain amount of reverse engineering does it not?   They even provided some touchstones. Beta 75 as a reference point. Wonderful stuff!!   Smaller blenders CAN and some DO take the time and effort to do better than a refinery or large bulk blender, like Warren Oil, in improving the "in the can" cleanliness. No I don't have a list but testing could generate that information.    Again, but one of several levers we can pull to improve engine life. The simplest is keeping a clean work station while doing your own oil changes.     
    • Thank you. I'll give it a try 
    • I just spent the last 45K miles doing samples every oil change over more than a full year to get the data for seasons and break-in to broke in.    I found the same thing to be true. Something was always teetering on done or had stepped off the cliff long before the OLM was DOA. In fact, I found about a thousand mile difference between summer and winter. That is during the winter half the OLM was STILL too long. Even the severe schedule was to long in the winter.   Now having done the work I can say I was NOT DISAPOINTED. I saw nothing I didn't already know. Nothing my father hadn't already demonstrated in his 2K OCI's pushing dated iron on dated oils and weak filters to mileages well beyond 300K.   Building on his work through use of Lab testing it wasn't hard to find the correlation between 'sight/feel/odor, the things dad relied on, and test results. Use of current viscosity stable chemistries & filters has pushed that marker for my motors out to 3K summer, 4K winter.    So the early lies were 3K on conventional oil and the lie upon the lie was 7K+. turns out to be off by a factor of two.    So... it is true that modern chemistry has doubled the useful oil life. But the base milage that came from was off by double. It's how good lies work. Partly true, sometimes mostly true so that your meter isn't set off. It also means that non-shear-stable shelf oils are only now as good as the old oils were in their best case scenario.    So the question now is how do we improve on that? Thus the question into cleanliness among the other items listed in the post quoted below.    If this bores you, feel free not to participate.       
    • Is it though?  Like LTZ, not a high take rate.  Current Sierra has AT4, Denali and Elevation as its main bread winners.  Each trim accounting for 25-35% of sales for Sierra.  SLT makes up about 10-15% at best.        Like others have predicted here for GMC, it will be:   - Pro (equal to WT Chevy)   - Elevation (replaces SLE and SLT)   - AT4 (and X)   - Denali (and Ultimate).  
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...